747938654520 has 128 divisors (see below), whose sum is σ = 2253262233600. Its totient is φ = 198612324864.

The previous prime is 747938654503. The next prime is 747938654521. The reversal of 747938654520 is 25456839747.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (747938654521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29539626 + ... + 29564934.

It is an arithmetic number, because the mean of its divisors is an integer number (17603611200).

Almost surely, 2^747938654520 is an apocalyptic number.

It is an amenable number.

747938654520 is an abundant number, since it is smaller than the sum of its proper divisors (1505323579080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

747938654520 is a wasteful number, since it uses less digits than its factorization.

747938654520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26349 (or 26345 counting only the distinct ones).

The product of its (nonzero) digits is 50803200, while the sum is 60.

The spelling of 747938654520 in words is "seven hundred forty-seven billion, nine hundred thirty-eight million, six hundred fifty-four thousand, five hundred twenty".